Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
3.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.33 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
356 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.174
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.84 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
12.38 s
Page Load Progression
FPage Weight BudgetAction2.6 MB transferred, 68 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction4146ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://portal.ct.gov/ | 2344ms | 37ms | 5ms | 3rd |
| Unattributable | 461ms | 23ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KHNQGWP | 357ms | 276ms | 64ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-89NN4475GK&cx=c>m=4e64h1 | 284ms | 201ms | 42ms | 3rd |
| https://portal.ct.gov/assets/js/app.js?v=20260417052736 | 238ms | 166ms | 26ms | 3rd |
| https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.eNjH1Jo6ldQ.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfq_osd-q7vwQm5aouAQRZibUmx4sg/m=el_main | 237ms | 155ms | 46ms | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 137ms | 116ms | 21ms | 3rd |
| https://portal.ct.gov/assets/css/app.css?v=20260417052736 | 87ms | 0ms | 0ms | 3rd |
DJS BundlesAction17 scripts, 391 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://portal.ct.gov/assets/js/app.js?v=20260417052736 | 140 KB | 97 KB (70%) | ✓ | 3rd |
| https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.eNjH1Jo6ldQ.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfq_osd-q7vwQm5aouAQRZibUmx4sg/m=el_main | 119 KB | 93 KB (78%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-89NN4475GK&cx=c>m=4e64h1 | 152 KB | 63 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KHNQGWP | 130 KB | 61 KB (47%) | ✓ | 3rd |
| https://egov.ct.gov/sitecore-global-feedback/client/build/bundle.js?v=2 | 80 KB | 39 KB (49%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 38 KB (67%) | ✓ | 3rd |
| https://rum-static.pingdom.net/prum.min.js | 3 KB | — | ✓ | 3rd |
| https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit | 28 KB | — | ✓ | 3rd |
| https://portal.ct.gov/layouts/system/VisitorIdentification.js | 2 KB | — | ✓ | 3rd |
| https://static.hotjar.com/c/hotjar-218205.js?sv=5 | 6 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
DPage Weight InventoryAction68 resources · 2.6 MB · 391 KB savings availableFIX
~390.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 68 resources | 2.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction18 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading21 fonts (371 KB)PASS
Web fonts
21
371 KB total
Render-blocking
0
of 21
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
Optimization checklist
- Preload critical fonts (priority=high)
- Use woff2 format for all fonts
- Set font-display to swap, optional, or fallback
- Subset large fonts (≤100 KB each)
Fixing the unchecked items could save ~10 KB and ~20 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints17 hints, 0 missing preconnectsPASS
Current Resource Hints
17 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall68 requests over 5448msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
portal.ct.gov portal.ct.gov | Other | 2344ms | 14 KB | — | $31/mo | Costly |
Unattributable Unattributable | Other | 461ms | 0 KB | — | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 357ms | 130 KB | 47% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 284ms | 152 KB | 41% | $4/mo | Costly |
portal.ct.gov portal.ct.gov | Other | 238ms | 140 KB | 70% | $3/mo | Costly |
translate.googleapis.com translate.googleapis.com | Other | 237ms | 119 KB | 78% | $3/mo | Costly |
Hotjar script.hotjar.com | Session Replay | 137ms | 57 KB | 67% | $2/mo | Optional |
portal.ct.gov portal.ct.gov | Other | 87ms | 96 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- portal.ct.gov adds 2344ms and costs ~$31/month
- Unattributable adds 461ms and costs ~$6/month
- Google Tag Manager adds 357ms and costs ~$5/month
- Google Tag Manager adds 284ms and costs ~$4/month
- portal.ct.gov adds 238ms and costs ~$3/month
- translate.googleapis.com adds 237ms and costs ~$3/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾ ▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
portal.ct.gov takes 2344ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 461ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 357ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 284ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
portal.ct.gov takes 238ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
70% of portal.ct.gov's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
translate.googleapis.com takes 237ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
78% of translate.googleapis.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
67% of Hotjar's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev